Andre Thomas cut out his children’s hearts and removed his own eyes. Texas considers him sane.

Joe Arridy had an IQ of 46. In 1939, he was executed for a crime he neither understood nor committed.

In 1992, Anthony Graves was arrested for brutally murdering a family in the middle of night. He had no motive. There was no physical evidence. The only witness recanted. And yet Graves remains behind bars.